| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a signal reproduction circuit that can reduce the cost by decreasing the number of components and obtain a reproduced signal with sufficient quantization accuracy while enhancing the processing speed. SOLUTION: The signal reproduction circuit is provide with a differentiation circuit 1 that differentiates an input step wave signal, an amplifier 2 that amplifies a differentiated signal up to a level required for analog/digital conversion, an analog/digital converter 3 that applies analog/digital conversion to the amplified differentiated signal, an accumulation circuit 4 that sequentially accumulates the output of the analog/digital converter, a delay circuit 5 that delays the output of the analog/digital converter to synchronize the output of the analog/digital converter with the output of the accumulation circuit, and an adder circuit 6 that sums the delayed output of the analog/digital converter and the output of the accumulation circuit. A valueΔt/CR is set to a value of (1/resolution) of the analog/digital converter, whereΔt is a sampling rate of the analog/digital converter and CR is a time constant of the differentiation circuit so as to eliminate the need for a coefficient generator and a multiplier circuit.</p> |
